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Phi Browser vs Arc: catalog facts
Phi Browser	Arc
Free A free download; the homepage mentions no paid plans.	Free Free to download and use. The software is closed source.
macOS	Windows, macOS
Native macOS interface on the Chromium engine Built-in AI assistant with persistent memory	Spaces keep work, personal and project browsing genuinely separate Split view and the command bar make keyboard-driven browsing fast
Apple Silicon Macs with macOS 14 or newer only Proactive AI features may not suit users who prefer a plain browser	The Browser Company has shifted its development focus to a newer browser, so Arc receives limited feature work No Linux build, and an account is required to use it
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.